Mr. Reid noted that: "Our galaxy probably has 4, not 2, spiral arms of gas and dust that are forming stars."

VOA: special.2009.01.20

Research has shown that just three rows of trees near poultry houses can reduce the release of dust and ammonia.

VOA: special.2009.09.08

Currently,the best explanation for the loss of methane is that it chemically reacts with dust in the atmosphere.

VOA: special.2009.12.30

They found that over a period of six years, planting three rows of trees reduced total dust and ammonia by more than half.

VOA: special.2009.09.08

Most of these "Dust Bowl refugees" could only find seasonal farm work like gathering fruit from trees.

VOA: special.2010.06.13

He says there is likely more risk from lead dust on plants or from playing in the soil than from the plant itself.

VOA: special.2009.06.09

The heavy metal enters the body when children breathe the paint dust or fumes in the air.

VOA: special.2009.08.31

In the mountain,the heat and dust were so thick that most men would have had trouble breathing.

VOA: special.2009.02.21

A specially designed collector gathered dust particles from the comet and stored them on the spacecraft.

VOA: special.2009.09.30

Up the road came the sound of creaking wheels and then, a slow cloud of dust.

VOA: special.2009.11.14

These huge groups of stars, gas and dust can be many thousands of light years across.

VOA: special.2009.01.20

For example, try to avoid animals with fur,dust, pollen from trees and flowers or cigarette smoke.

VOA: special.2009.07.28

A comet is a huge ball of frozen gas and dust that often releases a long trail of material as it nears the sun.

VOA: special.2009.09.30

Mostly they gather dust. But a project based in Washington is putting unwanted bikes from the United States to good use in developing countries.

VOA: special.2009.11.16

One of the first songs he wrote was about leaving home and fleeing the Dust Bowl.

VOA: special.2010.06.13

In nineteen forty-two,Hurston published a story about her own life,called "Dust Tracks on a Road."

VOA: special.2009.02.22

Miners and chemical workers are at risk of COPD from breathing dust and harmful chemicals.

VOA: special.2010.06.23

These areas of Texas, Oklahoma and other states became known as the Dust Bowl.

VOA: special.2010.06.13

They stopped at every stream to drink and wash the dust from their faces.

VOA: special.2009.08.27

What with the dust and the sun pouring directly on our heads ...

VOA: special.2010.04.26

They say it would have caused huge clouds of dust to block sunlight.

VOA: special.2009.01.20

A newsman wrote that the whole valley was boiling with dust and smoke.

VOA: special.2009.08.27

Here is Union Station band member Dan Tyminski singing "Dust Bowl Children."

VOA: special.2011.04.29

Chief Sitting Bull said. He held a little dust between his fingers.

VOA: special.2010.04.08